package com.xiaotu.command;

/**
 * @author 张晓
 * @create 2020-06-24 15:20
 */
public class LightReceiver {

    public void on(){
        System.out.println(" 电灯打开了 ");
    }
    public void off(){
        System.out.println(" 电灯关闭了 ");
    }

}
